import pygame
from settings import Settings
from ship import Ship
import game_funtions as gf
from pygame.sprite import Group
from alien import Alien


def run_game():
    # 初始化pygame
    pygame.init()
    ai_settings = Settings()
    screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))
    pygame.display.set_caption("alien game")

    ship = Ship(ai_settings, screen)
    alien = Alien(ai_settings, screen)
    bullets = Group()
    aliens = Group()
    gf.create_fleet(ai_settings, screen, ship, aliens)
    # 开始游戏主循环体
    while True:
        # 监视器
        gf.check_events(ai_settings, screen, ship, bullets)
        # 飞船与子弹更新
        ship.update()
        gf.update_bullets(bullets)
        # 更新屏幕
        gf.update_screen(ai_settings, screen, ship, aliens, bullets)


run_game()
